Re:Why is Rosetta 2 fast?
by astrange on Wednesday November 09, 2022 @04:09PM
(#33537871)
Over-optimizing your "cold" code can also make things worse for the "hot" code, eg by growing code size so much that briefly entering the cold space kicks everything out of caches.
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I have often lamented not being able to hint to the JIT when I’ve transitioned from startup code to normal operation. I don’t need my Config file parsing optimized. But the code for interrogating the Config at runtime better be.
Everything before listen() is probably run once. Except not ever program calls listen().